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Azurite Germany
  
  Index -> What is it? - Where is it from?
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Mathias




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PostPosted: Aug 25, 2019 12:52    Post subject: Azurite Germany  

Yesterday I bought a specimen labeled "Azurite". According to the (very experienced) vendor, the specimen is from Germany, Siegerland.
The size of the specimen is approximately 11*10*7 cm.

Azurite is clearly visible, as well as Malachite, but there seems to be a light blue colored mineral present.


Is there anybody out there who is able to address the mine where this specimen might be from?


Thanks,


Mathias



630A.JPG
 Mineral: Azurite
 Locality:
Siegerland, Rhineland-Palatinate/Rheinland-Pfalz, Germany
 Dimensions: 11*10*7 cm
 Description:
 Viewed:  560 Time(s)

630A.JPG



630B.JPG
 Description:
 Viewed:  558 Time(s)

630B.JPG



630R.JPG
 Description:
 Viewed:  561 Time(s)

630R.JPG



630S.JPG
 Description:
 Viewed:  559 Time(s)

630S.JPG


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Tobi




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PostPosted: Aug 26, 2019 02:03    Post subject: Re: Azurite Germany  

Mathias wrote:
Yesterday I bought a specimen labeled "Azurite". According to the (very experienced) vendor, the specimen is from Germany, Siegerland. The size of the specimen is approximately 11*10*7 cm. Azurite is clearly visible, as well as Malachite, but there seems to be a light blue colored mineral present. Is there anybody out there who is able to address the mine where this specimen might be from?
Thanks,
Mathias
Hi Mathias, I'm not an expert on azurite and malachite and I can't tell you where this is from or if it is even from Siegerland or from Germany at all. The problem with the "Siegerland" locality information is that this region stretches over two German federal states and is one of the most important classic mining ares in Germany with hundreds of mines - and a lot of localities for copper minerals such as azurite and malachite.

I hope that someone with a lot more knowledge about Siegerland minerals reads this and is able to help.

Regards
Tobi
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Mathias




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PostPosted: Aug 26, 2019 04:46    Post subject: Re: Azurite Germany  

Thanks Tobi,

Somehow I don't doubt that it is a German Azurite, let's say the price tag was at the level of a fair German Azurite ;) And the seller is German and very reliable.

The matrix is typically different from azurites from e.g. Morocco or China.
This specimen has a very heavy matrix. I don't know what kind of material, I assume copper containing.

In the mean time, a befriended collector who has a book about Siegerland mineral specimens believes he may point it down to a more specific locality.


Best regards,

Mathias
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Kevin Conroy




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PostPosted: Aug 26, 2019 09:52    Post subject: Re: Azurite Germany  

I'm not sure if this will help, but I think that the other blue-green mineral may be allophane.
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Tobi




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PostPosted: Aug 27, 2019 01:39    Post subject: Re: Azurite Germany  

Mathias, I showed your photos to several fellow collectors who have a lot of knowledge about German minerals, including Siegerland localities. All of them agreed that they have never seen such a combination from anywhere in Germany. It is rather possible that this could from somewhere else, maybe Arizona, but rather sure not from Germany, sorry :-( As I said, I'm not an expert on azurite and malachite, but my first thought was Bisbee/Arizona, the reddish matrix would fit ...

I don't know what the third turquoise-coloured mineral is, my first thought was chrysocolla, but I think Kevin could also be right with allophane. None of them ever appeared in such vivid-coloured combinations with azurite and malachite from a German locality.

I know you said that the vendor is very experienced and very reliable, I don't doubt that. But without being offensive, I know that mistakes happen even to the most experienced of us. I am sure your vendor trusted the information and it is very plausible that azurite/malachite specimens come from Siegerland, there were many of them. But a specimen like that is quite sure not from Siegerland or any other German locality, I'm really sorry to say that.

Of course this is no proof but my sources (one of them is our FMF member Andreas Gerstenberg who is really an expert on German minerals, another is long-time collector Michael Ochel who has Siegerland among his collecting focuses, the third one is Kai Bork, also a very experienced collector) are also very reliable and knowledgeable, and they all agreed that this is presumably not from a German locality. But who knows, maybe it is ...

Again, I hope someone can solve this riddle!

Regards
Tobi
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